多种损伤可以导致外耳道狭窄,包括外伤、手术和感染,常见的原因是感染后的纤维化增生。头颈肿瘤外照射放疗(EBRT)常常难以避免损伤颞骨及其周围的软组织,外耳道(EAC)狭窄是典型的放疗后并发症。但临床上单纯进行EBRT治疗的患者。罕见明显的EAC狭窄。 已知正常组织放疗后的并发症由许多因素决定, A variety of injuries can result in narrowing of the external auditory meatus, including trauma, surgery, and infection, a common cause of post-infection fibrotic hyperplasia. Head and neck cancer radiotherapy (EBRT) is often difficult to avoid damage to the temporal bone and its surrounding soft tissue, ear canal (EAC) stenosis is a typical post-radiotherapy complications. But the clinical treatment of EBRT patients. Rare obvious EAC stenosis. It is known that the complications of normal tissue after radiotherapy are determined by many factors,